Took about an hour, but got `nix build .` to work. I don't blame the person who picked the tool, I just have a long term dislike for Nix as an ecosystem and language. I find it hard to learn, change, explore and evolve to keep up with changes. It feels extremely unintuitive to me and I ran NixOS for over a year at my team's recommendation.

Arch (OSX for them) + mise + docker has made me and my team far happier.